Focus on Cellulose ethers

Fa'aaogāga 'ese'ese ole cellulose ma ona fa'atupu

Fa'aaogāga 'ese'ese ole cellulose ma ona fa'atupu

O le Cellulose o se polysaccharide macromolecular e fausia i le kulukose, lea e maua i se aofaiga tele i laau lanumeamata ma meaola o le gataifale.O le mea sili ona lautele tufatufaina ma sili ona tele mea faanatura polymer i le natura.E lelei le biocompatibility, faʻafouina ma Biodegradable ma isi mea lelei.E ala i le photosynthesis, e mafai e la'au ona fa'apipi'i le faitau selau miliona tone o cellulose i tausaga ta'itasi.

 

Fa'amoemoega Talosaga Cellulose

O le cellulose masani ua faʻaaogaina lautele ona o ana lava mea faʻapitoa ma vailaʻau, ae o le cellulose meafaitino masani o loʻo i ai mea faʻaoga eseese pe a maeʻa le gaosiga ma le fesuiaiga, lea e mafai ona fetaui ma manaoga eseese o pisinisi eseese.O le fa'aogaina o meafaitino e fa'atino ai le cellulose ua avea ma aga fa'alenatura o le Atina'e ma nofoaga autu o su'esu'ega o mea fa'akomepiuta.

 

O mea e maua mai i le cellulose e maua mai i le esterification poʻo le etherification o vaega hydroxyl i polymers cellulose faʻatasi ai ma vailaʻau vailaʻau.E tusa ai ma uiga faʻatulagaina o mea faʻaalia, e mafai ona vaevaeina le cellulose derivatives i ni vaega se tolu: cellulose ethers, cellulose esters, ma cellulose ether esters.

1. Cellulose eter

O le cellulose ether o se faaupuga lautele mo se faasologa o mea e maua mai i le cellulose e faia i le tali atu o le cellulose alkali ma le etherifying agent i lalo o nisi tulaga.Cellulose ether o se ituaiga o cellulose derivative ma ituaiga eseese, fanua talosaga lautele, voluma tele gaosiga ma maualuga tau suʻesuʻega.O lona fa'aogaina e aofia ai le tele o matā'upu e pei o alamanuia, fa'ato'aga, pisinisi kemisi i aso ta'itasi, puipuiga o le si'osi'omaga, aerospace ma le puipuiga a le atunu'u.

O le cellulose ethers o loʻo faʻaaogaina faʻapisinisi o: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose ma hydroxypropyl methylcellulose Cellulose ma isi.

 

2. Cellulose esters

 

Cellulose esters e masani ona faʻaaogaina i vaega o le puipuiga a le atunuʻu, vailaʻau vailaʻau, biology, vailaʻau, fausiaina ma e oʻo lava ile aerospace.

 

O esters cellulose o loʻo faʻaaogaina faʻapisinisi o: cellulose nitrate, cellulose acetate, cellulose acetate butyrate ma le cellulose xanthate.
3. Cellulose eter ester

 

Cellulose ether esters o ester-ether fa'afefiloi fa'afefiloi.

 

Talosaga fanua

 

1. Fale talavai

Cellulose ether ma ester derivatives o loʻo faʻaaogaina lautele i vailaʻau mo le mafiafia, faʻamalosia, faʻasaʻo faʻamalolo, faʻasaʻo faʻatonutonu, faia ata tifaga ma isi faʻamoemoega.

 

2. Fa'alavalava fanua

O le cellulose esters e faia se sao taua tele i le faʻapipiʻiina o talosaga.Cellulose esters o loʻo faʻaaogaina i mea faʻapipiʻi, resini faʻaleleia poʻo mea e fai muamua ata tifaga e tuʻuina atu ai faʻalava ma le tele o mea lelei.

 

3. Membrane tekinolosi fanua

O mea e maua mai i le cellulose ma mea e maua mai ei ai le lelei o galuega tetele, fa'atinoga mautu, ma toe fa'aaogaina.E ala i le faʻapipiʻiina o le tagata lava ia i luga ole laiga, auala faʻafefeteina, tekonolosi eletise ma isi auala, e mafai ona saunia mea faʻapipiʻi e lelei le vavaeeseina.I le fanua o tekinolosi membrane faʻaaogaina lautele.

 

4. Faufale fanua

O le cellulose ethers e maualuga le malosi o le gel e mafai ona fa'afefeteina ma e aoga e fai ma fa'aopoopoga i vaega faufale, e pei o sima fa'apipi'i fa'apipi'i.

 

5. Aerospace, taavale malosi fou ma masini eletise maualuga

E mafai ona fa'aogaina mea fa'aoga optoelectronic e fa'atatau i le cellulose i le vateatea, ta'avale malosi fou ma masini eletise maualuga.

 

6. Isi fanua

 

Faafitauli ma Fofo i le Cellulose Application

 

I le taimi nei, o loʻo i ai pea i le cellulose ni faʻaletonu.Ona o uiga o lona fausaga faʻapipiʻi, e le mafai ona faʻafefeteina le cellulose ma e faigata ona faʻamavae i solvents masani, lea e matua faʻatapulaʻaina ai le atinaʻeina ma le faʻaogaina o mea cellulose.E pei o le le lelei o le solubility i solvents masani, le lava o le thermoplasticity, maualuga hydrophilicity ma le leai o ni meatotino antibacterial.

 

O le mea lea, o le mamanu ma le fausiaina o mea fou e maua mai i le cellulose o le faʻavae lea mo le faʻaogaina lelei o le cellulose, ma o le atinaʻeina o tekinolosi faʻamaʻi mama ma lelei o se auala taua ma faʻamautinoa mo le faʻaogaina lelei o le cellulose.


Taimi meli: Ian-21-2023
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